| Paula LV Ltd | Other services | 2013 |
| Paulin and Wilson Limited | Real estate | 1972 |
| Pavilion Foods Ltd | Wholesale & retail | 2021 |
| Paws on Patrol Ltd | Other services | 2025 |
| Paxmere Limited | Professional & scientific | 2002 |
| Paxton Secured Income Fund Limited Partnership | | 2010 |
| Paxton Secured Income Limited | Professional & scientific | 2021 |
| Payneless Consulting Limited | Other services | 2023 |
| PBM Global Resource Ltd | Professional & scientific | 2020 |
| PCN Property Services (Surrey) Ltd | Real estate | 2013 |
| PD Anglo-Euro Limited | Transport & logistics | 2014 |
| PDC BRG Company Ltd | Construction | 2016 |
| PDC Strategies UK Limited | Professional & scientific | 2024 |
| PDP Couriers Ltd | Transport & logistics | 2020 |
| Peachi Baby Ltd | Wholesale & retail | 2020 |
| Peak Development Ltd | Information & communication | 1997 |
| Peaktrend Limited | Information & communication | 2011 |
| Pearce Services Ltd | Construction | 2025 |
| Pearl Collective Ltd | Other services | 2025 |
| Pearls Furnishings Limited | Extraterritorial | 1982 |
| Peas and Carrots Ltd | Hospitality | 2011 |
| Peer Polo Limited | Arts & recreation | 2022 |
| Pelican Lane 1966 Limited | Extraterritorial | 2014 |
| Pemberton Property Solutions Limited | Real estate | 2019 |
| Pembrokeshire Winery Ltd | Information & communication | 2003 |
| Penfold (Basingstoke) Management Company Limited | Professional & scientific | 1982 |
| Penguin Herder Limited | Information & communication | 2017 |
| Penmar Transport Limited | Transport & logistics | 2008 |
| Pennie Pictures Ltd | Professional & scientific | 2023 |
| Pentangle Land Holdings Limited | Real estate | 2015 |
| Penwood Nurseries Limited | Agriculture & fishing | 2001 |
| People = Potential Limited | Administrative & support | 2008 |
| People and Processes Consulting Ltd | Professional & scientific | 2015 |
| People Essentials Limited | Professional & scientific | 2011 |
| People First Personnel Limited | Administrative & support | 2016 |
| Pepceuticals Ltd | Manufacturing | 1998 |
| Pepito's Limited | Hospitality | 2016 |
| Perborough Consulting Ltd | Information & communication | 2016 |
| Percare Limited | Wholesale & retail | 2025 |
| Percy & PYE Ltd | Manufacturing | 2024 |
| Peregrine Partnerships Ltd | Real estate | 2024 |
| Perfect Paperwork Limited | Professional & scientific | 2014 |
| Perfect Scents Limited | Wholesale & retail | 2006 |
| Perfect to Read Ltd | Information & communication | 2023 |
| Perfectfield Limited | Real estate | 1989 |
| Perfectly Posh Hair Limited | Other services | 2019 |
| Performance Lighting Solutions Ltd | Construction | 2018 |
| Perico Delight Limited | Hospitality | 2024 |
| Perico Peri Delight Limited | Hospitality | 2025 |
| Peritus Holdings Ltd | Real estate | 2025 |
| Perry Investments Limited | Real estate | 2020 |
| Personal Urban Ltd | Information & communication | 2016 |
| Pertineret Limited | Information & communication | 2021 |
| Petcare for ALL Limited | Other services | 2024 |
| Peter Cundell Development Limited | Construction | 2013 |
| Peter Hambro Limited | Administrative & support | 1990 |
| Peter Page Limited | Extraterritorial | 2022 |
| Peter Sampson Consulting Limited | Professional & scientific | 2019 |
| Petmon Properties Limited | Real estate | 1962 |
| Petroflux Ltd. | Professional & scientific | 2003 |
| Petroleum Resource Evaluation Limited | Professional & scientific | 2017 |
| Petromile Limited | Extraterritorial | 2003 |
| PF Power Solutions Limited | Manufacturing | 1998 |
| PFH Limited | Arts & recreation | 2020 |
| PH Settlement Ltd | Financial services | 2020 |
| Phalaris Limited | Agriculture & fishing | 2022 |
| Pharma Experts Limited | Professional & scientific | 2015 |
| Pharmaccx Limited | Information & communication | 2021 |
| Phases Clinical Research Ltd. | Health & social care | 1997 |
| Phatt Ventures Limited | Manufacturing | 2018 |
| Phigi Associates Limited | Professional & scientific | 2013 |
| Philip Brown Violins Limited | Wholesale & retail | 2009 |
| Philip Wadge Associates Ltd | Professional & scientific | 2018 |
| Phoenix Brewery Management Company Limited | Households | 2007 |
| Phoenix Brewery Mgmnt Company Ltd | Households | 2018 |
| Phoenix Cookers Ltd | Other services | 2015 |
| Phoenix Court (Kingsclere) Limited | Real estate | 1986 |
| Phoenix Express Courier Services Limited | Transport & logistics | 2002 |
| Phoenix Lets Ltd | Hospitality | 2017 |
| Phoenix Pools Limited | Construction | 2019 |
| Phoenix Ryse Group Ltd | Arts & recreation | 2026 |
| Phone Mania Newbury Ltd | Wholesale & retail | 2017 |
| PHOTO4U Ltd | Professional & scientific | 2025 |
| Photonic Echo Ltd | Professional & scientific | 2024 |
| PHP Supplies Limited | Wholesale & retail | 2014 |
| Pictorial Films Ltd | Information & communication | 2020 |
| Piece and Quiet Puzzles Limited | Extraterritorial | 2020 |
| Pine and Oak Furniture Limited | Wholesale & retail | 2006 |
| Ping Thinking Limited | Professional & scientific | 2017 |
| Pinkston Racing Limited | Arts & recreation | 2012 |
| Pinnacle Builders (Newbury) Ltd | Construction | 2022 |
| Pinstripe Productions Limited | Arts & recreation | 1983 |
| Pioneering Concepts Limited | Information & communication | 2003 |
| PIP Drinks Limited | Wholesale & retail | 2025 |
| Piper-Power Ltd | Construction | 2012 |
| Pisces Publications Limited | Information & communication | 2010 |
| Pitch and Ginger Ltd | Administrative & support | 2023 |
| Pitch Maintenance Services Ltd. | Construction | 2016 |
| Pitstop Trading Company Ltd | Wholesale & retail | 2025 |
| Pixel Collab Limited | Professional & scientific | 2025 |